Electric fan



FIG. 1 is a perspective view from the right side of the top of the fan;

FIG. 2 is a perspective view from the right side of the top of the fanof FIG. 1 when the fan is partially open; and,

FIG. 3 is a perspective view from the right side of the top of the fanof FIG. 1 when the fan is opened to a 90 degree angle.

The ornamental design for an electric fan, as shown and described.